Heavy-duty gas turbine shell

Abstract

The invention discloses a heavy-duty gas turbine shell. The heavy-duty gas turbine shell comprises a shell body, a FG pipe frame exhaust pipe and a turbine shell exhaust pipe; the shell body is spliced by multiple shell wall plates; a fireproof wind door and a CO2 fireproof pipe joint are arranged on the side wall of the shell body; a gas intake chamber, a ventilation cover, an explosion-proof cover plate and a ventilation pipe joint are arranged on the top wall of the shell body; the turbine shell exhaust pipe is connected with the ventilation pipe joint through a fan; a silencer I is arranged on the turbine shell exhaust pipe; and a silencer II is arranged on the FG pipe frame exhaust pipe. The heavy-duty gas turbine shell is excellent in noise isolating and reducing effect, has such functions as CO2 fire control, forced ventilation and forced heat dissipation, and can be quickly disassembled and assembled through modular design.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a heavy-duty gas turbine casing. Background technique [0002] Heavy-duty gas turbines have the advantages of saving energy, improving the environment, providing electricity, improving the quality of heat supply, reducing the labor intensity of scattered boiler room workers and saving construction land, etc., and have good economic benefits. [0003] The heavy-duty gas turbines are arranged indoors or partially outdoors and are enclosed by soundproof enclosures. Since the heavy-duty gas turbine is a high-speed rotating thermodynamic machine, it is noisy during operation; and the surface temperature of the turbine, compressor and combustion chamber is at least above 200°C when the cylinder block is not kept warm during operation, and a large amount of heat is discharged. If the heat is taken away, the temperature in the casing will rise sharply, which will accelerate the agi...

AI Technical Summary

Problems solved by technology

Since the heavy-duty gas turbine is a high-speed rotating thermodynamic machine, it is noisy during operation; and the surface temperature of the turbine, compressor and combustion chamber is at least above 200°C when the cylinder block is not kept warm during operation, and a large amount of heat is discharged. If the heat is taken away, the temperature in the casing will rise sharply, which will accelerate the aging of thermal wiring, components and other components in the casing, and cause the external temperature of the actuator and pipe fittings that control the oil system in the casing to be too high, resulting in machine failure. The parts are aging, the high pressure inside the pipe is resistant to electrochemical corrosion caused by fuel oil, and the thermal components inside are in danger of burning or even catching fire

In addition, since the fuel used is natural gas, if there is a natural gas leak in the casing of the gas turbine, and the leaked natural gas cannot be quickly drawn out of the casing by the casing fan, the concentration of natural gas in the casing will increase, and there will be a danger of explosion

[0004] Existing ordinary steam turbine units also have casing systems, but the existing ordinary steam turbine casings only have functions such as sound insulation and noise reduction, lighting, etc., and do not have functions such as fire protection, forced ventilation, and forced heat dissipation

The heavy-duty gas turbine casing system is crucial to the safe operation of the entire power plant. It plays the role of providing corresponding protective measures for the gas turbine. For the characteristics of heavy-duty gas turbines, which are characterized by loud noise, high calorific value, and the risk of flammable gas leakage, the existing The casing of the gas turbine can not meet the requirements of the use of heavy-duty gas turbines

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